What you need is patience! Every server no matter how large or small takes time to become popular. You need to discuss with your members what kind of server settings/mods etc you like and there you can start building your server. Everyone has their own different needs and somehow you got to put that together and make it fun. As you are in a clan and have members it will helpful if they are active on your server. Im from the UK and i started my adventure in Oct 2009 with just 1 server and just me myself and I, probably after some month my server started picking up with some regulars. After a year on i got more than 10 active clan/admins members and alot of server regulars and increased to 4 servers (different ET mods).
My servers are active but not popular, but im not bothered im here to have some fun. If it become popular than ill be a very happy server owner.
Everything else what daredevil said is true. ET came out in 2003 so its been a very long time but its never too late to start.

http://et.trackbase.net/index.php?mo...rinfo&idx=3989 ( main server NQ )

http://et.trackbase.net/index.php?mo...rinfo&idx=3897 ( etpub )

http://et.trackbase.net/index.php?mo...rinfo&idx=3902 ( nitmod )

http://et.trackbase.net/index.php?mo...rinfo&idx=4007 ( Jaymod )

My server which i have put above, im not advertising here btw.